{"id":46654,"date":"2019-10-22T23:18:24","date_gmt":"2019-10-22T22:18:24","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/quest-ce-que-lequation-de-darcy-weisbach-definition\/"},"modified":"2019-10-22T23:18:24","modified_gmt":"2019-10-22T22:18:24","slug":"quest-ce-que-lequation-de-darcy-weisbach-definition","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/fr\/quest-ce-que-lequation-de-darcy-weisbach-definition\/","title":{"rendered":"Qu&#8217;est-ce que l&#8217;\u00e9quation de Darcy-Weisbach &#8211; D\u00e9finition"},"content":{"rendered":"<div class=\"su-quote su-quote-style-default\">\n<div class=\"su-quote-inner su-clearfix\"><span>L&#8217;\u00e9quation de Darcy \u2013 Weisbach est une \u00e9quation ph\u00e9nom\u00e9nologique qui relie la perte de charge majeure due au frottement des fluides sur une longueur de conduite donn\u00e9e \u00e0 la vitesse moyenne.\u00a0G\u00e9nie thermique<\/span><\/div>\n<\/div>\n<div class=\"su-divider su-divider-style-dotted\"><\/div>\n<div class=\"lgc-column lgc-grid-parent lgc-grid-60 lgc-tablet-grid-60 lgc-mobile-grid-100 lgc-equal-heights  lgc-first lgc-last\">\n<div class=\"inside-grid-column\">\n<div class=\"su-spacer\"><\/div>\n<h2><span>\u00c9quation de Darcy-Weisbach<\/span><\/h2>\n<p><span>Dans la dynamique des fluides,\u00a0<\/span><strong><span>l&#8217;\u00e9quation de Darcy \u2013 Weisbach<\/span><\/strong><span>\u00a0est une \u00e9quation ph\u00e9nom\u00e9nologique qui relie la\u00a0<\/span><strong><span>perte de charge principale<\/span><\/strong><span>\u00a0, ou perte de pression, due au\u00a0<\/span><strong><span>frottement des fluides<\/span><\/strong><span>\u00a0sur une longueur donn\u00e9e de conduite \u00e0 la vitesse moyenne.\u00a0Cette \u00e9quation est valable pour\u00a0<\/span><strong><span>un \u00e9coulement monophas\u00e9 incompressible, parfaitement d\u00e9velopp\u00e9<\/span><\/strong><span>\u00a0.<\/span><\/p>\n<p><span>L&#8217;\u00e9quation de Darcy \u2013 Weisbach peut \u00eatre \u00e9crite sous deux formes (\u00a0<\/span><strong><span>forme de perte de pression<\/span><\/strong><span>\u00a0ou\u00a0<\/span><strong><span>forme de perte de charge<\/span><\/strong><span>\u00a0).\u00a0Dans le formulaire de perte de t\u00eate peut \u00eatre \u00e9crit comme:<\/span><\/p>\n<p><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Major-Head-Loss-head-form.png\"><img loading=\"lazy\" class=\"aligncenter size-full wp-image-14583 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Major-Head-Loss-head-form.png\" alt=\"Perte de t\u00eate majeure - forme de t\u00eate\" width=\"199\" height=\"88\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Major-Head-Loss-head-form.png\" \/><\/a><\/p>\n<p><span>o\u00f9:<\/span><\/p>\n<ul>\n<li><span>\u0394h = perte de charge due au frottement (m)<\/span><\/li>\n<li><em><span>f\u00a0<\/span><\/em><em><sub><span>D<\/span><\/sub><\/em><span>\u00a0=\u00a0<\/span><a title=\"Facteur de friction de Darcy\" href=\"https:\/\/www.thermal-engineering.org\/fr\/quest-ce-que-le-facteur-de-friction-de-darcy-definition\/\"><span>le facteur de friction de Darcy<\/span><\/a><span>\u00a0(sans unit\u00e9)<\/span><\/li>\n<li><span>L = la longueur du tuyau (m)<\/span><\/li>\n<li><span>D =\u00a0<\/span><a title=\"Diam\u00e8tre Hydraulique\" href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/fluid-dynamics\/internal-flow\/hydraulic-diameter-2\/\"><span>le diam\u00e8tre hydraulique<\/span><\/a><span>\u00a0de la conduite D (m)<\/span><\/li>\n<li><span>g = la constante gravitationnelle (m \/ s\u00a0<\/span><sup><span>2<\/span><\/sup><span>\u00a0)<\/span><\/li>\n<li><span>V = la vitesse moyenne d&#8217;\u00e9coulement V (m \/ s)<\/span><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<div class=\"su-accordion\">\n<div class=\"su-spoiler su-spoiler-style-default su-spoiler-icon-plus su-spoiler-closed\">\n<div class=\"su-spoiler-title\" tabindex=\"0\" role=\"button\"><span>Forme de perte de pression<\/span><\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"su-spoiler-content su-clearfix\">\n<p>&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;.<\/p>\n<p>Cet article est bas\u00e9 sur la traduction automatique de l&#8217;article original en anglais. Pour plus d&#8217;informations, voir l&#8217;article en anglais. Pouvez vous nous aider Si vous souhaitez corriger la traduction, envoyez-la \u00e0 l&#8217;adresse: translations@nuclear-power.com ou remplissez le formulaire de traduction en ligne. Nous appr\u00e9cions votre aide, nous mettrons \u00e0 jour la traduction le plus rapidement possible. Merci<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>L&#8217;\u00e9quation de Darcy \u2013 Weisbach est une \u00e9quation ph\u00e9nom\u00e9nologique qui relie la perte de charge majeure due au frottement des fluides sur une longueur de conduite donn\u00e9e \u00e0 la vitesse moyenne.\u00a0G\u00e9nie thermique \u00c9quation de Darcy-Weisbach Dans la dynamique des fluides,\u00a0l&#8217;\u00e9quation de Darcy \u2013 Weisbach\u00a0est une \u00e9quation ph\u00e9nom\u00e9nologique qui relie la\u00a0perte de charge principale\u00a0, ou perte &#8230; <a title=\"Qu&#8217;est-ce que l&#8217;\u00e9quation de Darcy-Weisbach &#8211; D\u00e9finition\" class=\"read-more\" href=\"https:\/\/www.thermal-engineering.org\/fr\/quest-ce-que-lequation-de-darcy-weisbach-definition\/\" aria-label=\"En savoir plus sur Qu&#8217;est-ce que l&#8217;\u00e9quation de Darcy-Weisbach &#8211; D\u00e9finition\">Lire la suite<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[8],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Qu&#039;est-ce que l&#039;\u00e9quation de Darcy-Weisbach - D\u00e9finition<\/title>\n<meta name=\"description\" content=\"L&#039;\u00e9quation de Darcy \u2013 Weisbach est une \u00e9quation ph\u00e9nom\u00e9nologique qui relie la perte de charge majeure due au frottement des fluides sur une longueur de conduite donn\u00e9e \u00e0 la vitesse moyenne. 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